Road scraper



(No Model.) 3 Sheets-Sheet 1.

0. E. MOATS. ROAD SGRAPER.

No. 581,606. Patented Apr. 27, 1897.

3 Sheets-Sheet 3.

R E MP A R Mm Bu .0 OR

(No Model.)

No. 581,606. Patented Apr. 27, 1897.

mim sw' "mumz mr u UNTTnn STATES PATENT FFICE.

ORTUS E. MOATS, OF CANTON, OHIO, ASSIGNOR TO THE AULTMAN COMPANY, OF SAME PLACE.

ROAD-SCRAPER.

SPECIFICATION forming part of Letters Patent No. 581 ,606, dated April 27, 1897. Application filed October 12, 1896. Serial No. 608,618. (No model.)

To aZZ whom it may concern.-

Be it known that I, ORTUS E. MOATS, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Road-Scrapers and Ido declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Figure 1 is a side elevation of a road-scraping machine embodying my invention. Fig. 2 is a plan view. Fig. 3 is a vertical crosssection on the line a; at, Fig. 1, looking forward. Fig. 4 is a rear elevation showing the rear axle and the parts for adjusting it. Figs. 5 and 6 are detail views of a portion of the mechanism. Fig. 7 is a detail perspective view of the devices for shifting the blade laterally.

The operative parts of the mechanism are supported upon a main frame, the principal parts of which consist of two longitudinal bars A A, these diverging somewhat from the front end toward the rear, and each being shaped so as to have a front up wardlyextending part a, an approximately horizontal central portion a, and a rear inclined part C62, with a backward-projecting arm a These main longitudinal bars are connected by cross bars of any suitable number and character, such as that at a at the front end, that at a at an intermediate line, and others that will be referred to.

The main frame is supported upon a running-gear comprising the front axle O, with wheels D, and the rear axle G, with its wheels D.

The front axle O is pivotallyconnected with the front end of the main frame, the latter having an expanded ring a, which rests upon a similar opposing ring 0, carried by the axle and supported thereon by means of a standard 0, there being a king-bolt of the ordinary sort for joining the parts together.

At the rear the main frame rests upon the axle cand is adjustably connected thereto in the manner to be described below.

The platform upon which the operator stands is indicated by B, it being supported by the rear part of the main frame in a suitable position.

Upon the supporting and transporting devices referred to is arranged a scraper-blade E. This maybe of any of the common forms or of any preferred sort. That shown is concavo-convex in cross-section and is substantially straight from end to end. It is connected by horizontal pivots to the draft-bars E, which are curved downward and secured to the rear side of the curved scraper-blade and extend forward over the top thereof on converging lines to the part which carries them. The latter is indicated by Fand consists of an expanded-ring'like plate, to which the aforesaid bars or arms E are bolted.

The present construction differs from those heretofore largely used, and has for one of its objects to simplify this part of the machine. In the earlier machines referred to use has been made of two rings or segments of rings which have required accurate fitting and have increased the number and weight of the parts and the expense incident to their construction beyond what is desirable. In the present machine one of the two rings commonly used is dispensed with entirely. The scraper-supporting part at F is suspended and guided by means of two clips or flanged bolts G, one on each side, and a third clip or flanged bolt or lug G at the front. These are so arranged as to greatly reduce the friction incident to the movements of the scraper when again adjusted, and successfully obviate the expense incident to providing and fitting the second ring used in earlier machines. The clips or lugs G G are secured to the draw-frame of the scraper, the latter consisting principally of the bar or bars I and one or more crossbars. As shown, there is a bifurcated bar I, having the backwardly-diverging arms i i united at the front end, where there is an eye 2", pivoted to an eye 2' carried by the main frame at its front end. As a result, the

scraper and its supporting devices are alframe.

lowed all of the flexibility, motions, and adjustments which are incident to machines of this class, such as the vertical movements of either end of the scraper independently of the other or the vertical movement thereof uniformly from end to end, and the endwise swinging or adjustment of it on lines transverse to the machine, and, notwithstanding the direct connection of the supporting-plate F immediately to the front bar I, instead of employing the heretofore common ring to carry this part F the rotary or axial adj ustment of the blade is also readily effected.

The scraper and its draft-frame just described are suspended from the main frame as follows: J J are links, one at each side of the machine. H is a bar secured to the draftbar 1, extending transverselythereof and of the machine.

erab ly the latterare the upturned arms of a cross bar'L, rigidly secured to the frame-bars AA. They have grooves in their'outer faces .to receive the rack-bars K and have aper-.

.tures or slots to permit the teeth of said bars to engage with the pinions M, by which the bars are'moved up or down either simultathe hand-wheels O, readily cause the rotation o'f'the v pinions'M M either independently or simultaneouslyrand in either direction, and as a result can raise or lower either or both ends of the scraper-blade through its draftframe.

In order to shift or adjust the blade laterally, I combine with it and with its support 'thefollowing devices: S is a worm-wheel arranged horizontally and mounted on the shaft S ,held by the bars 8 8 secured to the main Thiswheel carries a crank-arm S, which is connected by the link S to the scraper-frame. T is a worm meshingwith the teeth of the wheel S and secured to shaft 25. This shaft extends backward toward the operators platform, and can be rotated by a hand- Wheel T thereon.

"Heretofore'the scrapers have been shifted from side to side or laterally adjusted by means of transversely-sliding rack-bars, with worms, bevel-gears, (to. One of the objects Preferably it carries the two: clips or flanged lugs G G, which support the; scraper-plate F, as above described, and at its? ends it has eyes 72 by which it is flexibly con-i nected to the links J. The latter, at their up-; per ends, are hinged to vertically-adjustablei plates'K'by means of the eyes 7c. The plates K'have vertical bars K with inwardly-turned; rack-teeth and are fitted in guides 11. Prefof the present invention is here also to simplify the construction, reduce the number of parts, obviate the loss of power from friction and binding, and provide a simple adjusting device consisting practically of but a single piecenamely,tl1e wheel S,with its crank-arm S. The cram ping and friction are almost entirely overcome, as the bearing-surfaces are reduced to that of the shaft S which supports the wheel S, this being in contradistinction to the long bearing-surfaces required for the transverse sliding-bars in the earlier constructions. The arm S vibrates with but little resistance, and the flexibly-connected link S applies all the power to throw the scraper to the right or the left.

The scraper-plate F can be adjusted axiallythat is, rotated more or less around a vertical axis at the center of said plate topermit the varying of the working angle of the blade to permit its complete reversal-by means of a series ofgear-teeth'U, formed on the plate or on a bar secured-thereto, apinion U and a shaft to, the latter being mountedin bearings carried by the draft-frame of :the scraper. The shaft to is coupledto an inclined shaft U which extends to a:point near the platform and is provided with a hand-wheel U this shaft U being held ina bracket-carrier U which permits it tobe swung to the right or the left without cramping. By means of these devices the operatorcan at any time cause the wheel U to rotate the tooth portion of the plate F, and thus axiallyadjust or reverse the scraper-blade. The scraper and the plate F are locked inv anypositiondesired by means of the bolt or'pin -V. This is carried by a short arm on the rock-shaft v, mounted in hearings on the draft frame. This shaft o is coupled at '0 to an extensible shaft M, which in turn is coupled at '0 to a rocloshaft e mountedon the platform and havinga foot-piece or-pedal r NVhen the operator desires to adjust the-scraper axially, he unlocks the plate F by placing his foot on the pedal M, which raises the pin V out of its aperture f, and,after effecting the adjustment, he removes his foot, whereupon the lock-bolt V drops into the opposing apertureand the scraper is held rigidly upon its draft-frame.

The rear axle can be adjusted relative to the longitudinal lines of the-machine as follows: This axle is pivoted by a vertical bolt or pin at 20 at a point relatively neartoone of the wheelsD, the pivot preferably engaging with one of the side bars ofthe main frame. wheel adjusting devices are interposed between the main frame and the axle, these consisting of a threaded rod V and a nut 10 the latter being connected to or formed with a bevel-wheel. WVith this wheel another at w engages, the latter being secured to a vertical shaft WV,which has at its upper end-a hand-wheel 10 conveniently arranged for reaching from the platform.

At a point near the opposite rear.

Whenever the operatordesiresto have the axle at an inclination to the longitudinal lines of the machine or to vary such inclination for any of the now well-known purposes, he can instantly effect such adjustment by rotating the hand-wheel Q03, whereupon the nut and shaft at 'W 10 cause the axle to be moved forward or back at its free end.

In respects other than those above recited there can be modifications as concerns the details of the mechanism illustrated. Thus the rectilinearly-sliding plates or bars K and their tooth-elevating devices can be omitted and a simple crank extending outward from the shaft n can be substituted for raising or lowering the links J. So, too, other means may be employed for effecting the axial adjustment or reversal of the blade; and, again, some of the features of the present mechanism can be employed in those machines in which the scraper-blades are pushed from behind instead of being drawn from the front.

The worms 0 and the worm-wheel N not only serve as a means for moving the scraperblade up or down, but also as a positive lock for holding the vertically-adjustable parts in any position in which they are put.

By having the shafting for the lock V automatically extensible provision is made for allowing the scrapers to swing laterally in either direction. This extension of the lockshafting is provided by forming the intermediate section '0 of two telescoping parts 2: and t the latter being tubular and slotted, and the part u being connected by a pin therein fitting in the slot, as at 12 This shafting has one section mounted on the scraper-support in fixed relations thereto, and one section on the platform or supporting-frame, and a third section interposed between the two aforesaid and universally coupled to both of them ,as at 12 Consequently both the lock and the pedal-piece are kept in fixed relations to their supports, and yet the lateral adj ustment of the scraperis permitted.

\Vhat I claim is- 1. In a road-scraping machine, the combination with the main frame having front wheels and rear wheels, of the scraper-blade and the draft-frame having one or more upwardly-bowed bars I immediatelybehind the front wheels, and the rear horizontal portions, the cross-bar H secured to the said horizontal portions, the depending flanged clips or lugs G secured to said cross-bar, the clip or lug G in front thereof, the circular plate F rotatably supported in the said clips or lugs, and the draw-bars E secured to the plate F and to the scraper-blade, substantially as set forth. I

2. In a road-scraping machine, the combination with the supporting-frame and the laterally-adjustable scraper, of the horizontallyarranged wheel S having a crank-arm connected thereto,one or more links S connecting said crank-arm to the scraper and gearing controllable by the operator for rotating the said wheel S, substantially as set forth.

3. In a road-scraping machine, the combination with the supporting-frame and the scraper, of the rotary plate F secured to the scraper and adapted to be adjusted axially, the lock for holding said plate in either of several positions, the shafting extending to the operators platform foractuatin g the lock, said shafting being automatically extensible, substantially as set forth.

4. The combination with the supportingframe, and the scraper, of the intermediate adjustable draft frame connected to the scraper, and adapted to have the scraper adjusted thereon around a vertical axis, a lock for holding the scraper in either of several positions relative to the draft -frame, and shafting for actuating said lock, said shafting having a section mounted on the draft-frame, a section mounted on the main frame, and means for universally coupling the two said sections, and said shafting being automatically extensible, substantially as set forth.

5. In a road-scraping machine, the combination with the main frame, the draft-frame, and the scraper, of the front running-gear, the rear axle pivoted relatively near one end to the main frame near one side thereof, the horizontal threaded shaft W connected to the axle near the other wheel, the nut engaging with said shaft, the gearing for rotating the nut, and the vertical shaft for actuating said gearing and having at its upper end a crank or hand-wheel adapted to be actuated from the platform, substantially as set forth.

0. In a road-scraping machine, the combination with the supporting-frame, the scraper draft-frame pivotally connected to the supporting frame, and the scraper supported from said draft-frame and adapted to vibrate about a vertical axis independently of any movement of said frame, of a toothed Wheel or disk pivotally mounted on the main frame, a link connecting said disk with the scraper draft-frame, gearing controlled by the operator standing 011 the platform on the main frame for rotating said toothed wheel or disk and adjusting the scraper laterally of the supporting-frame, substantially as set forth.

7. In a road-scraping machine, the combination with the supporting-frame, the scraper draft-frame pivotally connected to the supporting-frame, and the scraper-blade supported by said draft-frame, of a horizontallyarranged toothed Wheel S mounted above the scraper, a'link, S connecting said wheel and the scraper draft-frame, a shaft extending longitudinally of the supporting-frame and having at one end a worm meshing with the teeth in the wheel S and at its other end a hand-wheel, substantially as and for the purpose set forth.

8. In a road-scraping machine, the combination with the supporting-frame, and the scraper-blade, of the rotary plate F secured TO the scmper and adapted up b'e'a'dju'soed axiextending int-o guides formed in the tubular 10 11 1,? lock for holding said lafive and H19 member, *substautially as set for-H1. V blade st a t iomryin Either of several 'positions, 5 In tesfimo'ny whereof I afliX my signamre ahrgck shiaf t for m'oy'i'ngi m 1001:, a, ro'ckin'pi's'ehce of two wimesses.

5 a 4; 'onjth-e 'o 'emtm s patorm, and an 1 tomatically-iextnsible connection bei-jwe'e'n ORTU'S E said flick-shafts, consisting ofa'tubular 'm emher, and a rod fitted loosely in said tubular 1 memhe-r and having projecting pins 01 lugs Witnesses: q 7

JAMES L. BT'IBOUT, PRIMUS PHILIPPL 

